Willaed d



(Mariel) W. D..DORE MUS.

LOOK.

Patented July 5, v1881.

ATTORNEYS.

Lilhngnphen Wanhinginn. D C.

UNITED STATES PATENT FFIcE.

\VILLARD D. DOREMUS, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR TOTHE EAGLE LOCK COMPANY, OF TERRYVILLE, CONNECTICUT.

LOCK.

SPECIFICATION forming .part of Letters Patent No. 243,872, dated July 5,1881.

Application filed April 25, 1881.

To all whom it may concern:

Be it known that I, WILLARD D. DOREMUS, of Washington city,DistrictofColumbia, have invented a new and useful Improvement in Looks; and Ido hereby declare that the followin g is a full, clear, and exactdescription of the same, reference being bad to the accompanyingdrawings, forming part of this specification, in which--- to Figure l isa view of the lock with the keyholder. its barrel, and the face-plateremoved. Fig. 2 is a similar view with the tumbler which holds the boltremoved and the bolt projected. Fig. 3 is a section through the line was of Fig.

1, the section passing also through the keyholder and its barrel. Fig. 4is a face view of the key-holder and barrel.

iWIy invention relates to an improvement in looks designed principallyfor drawers and cupboards, but applicable also to other uses.

In the above application of looks it frequently becomes desirable, whenones keys are misplaced or not convenient, to quickly lock the drawer ordoor, particularly when sud- 2 5 denly called away from the drawers ofdesks or those containing valuables.

The object of my invention is to supply this need; and to that end itprovides a lock consisting of a bolt provided with a spring for drivingit into the locking position, combined with a catch for holding the boltwithdrawn, and a depressible thimble, sleeve, or exposed surfacearranged about the keyhole and adapted to be forced inwardly to allowthe unlocked 3 5 bolt to be shot from the action of the spring into alocking position without the application of the key, all as hereinaftermore fully described.

In the drawings, A represents the back plate,

and B the front plate, of a drawer or cupboard look. In the rightangularedge of the back plate is arranged the sliding bolt C, whose shankportion is slotted and slides over a pin,

a. In the front plate is formed a barrel, D, in

4 5 which revolves a key-holder, while on one side of this are arrangeda series of tumblers, I),

forced toward the key-holder by individual springs a.

another, and are pivoted upon the pin to, im-

mediately above the shank of the bolt, while the other ends of thetumblers have straight These tumblers rest fiat one upon (ModoL) slotstherein adapted to receive the lug d on the bolt whenever said slots arebrought into proper registration by the key.

As so far described the lock does not differ substantially from onealready inuse. In applying my invention to the same I place at the rearend of the bolt a spring, E, whose normal tendency is to throw the boltinto its locking position. I then place upon the tum- 6o blers b anadditional tumbler, bi, Fig. 1, haying a right-angular slot in its end.This tumbler is pivoted upon the same center a with the other tumblersand has also a corresponding spring, 0 the eifect of which is to throwthe shoulder c of the tumbler in front of the lugd of the bolt and holdthe bolt against the tension of the spring E, so that it will stayunlocked when withdrawn by the key. When it is desired to lock the boltby the key this sup- 7o plemental tumbler is acted upon by the-key andthrown back, like the other tumblers, until the lug a of the bolthas afree outward travel. Now, to eliect the same result without the.application of the key, I throw the catch or 7 5 supplemental tumblerback by the following. means: The key-holder G, which is slottedlongitudinally and has its outer end exposed. through the barrel D, Icause to have an endwise as well as a rotary movement, and on the-8osame I form a boss, thimble, ring, collet, or

sleeve, having a conical end, f, and the conical end of this thimble ismade to bear against the. adjacent edge of the supplemental tumblercarrying the catch 0, so that when the keyholder is thrust in by apressure of the finger on its exposed face the conical surface acts likea cam and throws back the said supple mental tumbler and catch, andallows the spring E to shoot out the bolt.

In making use of my invention 1 do not re strict my. invention to anyparticular form or application of spring E'to the bolt, as any springwhich will project the bolt can be used with my invention. I do not,moreover, limit 5 myself to the particular form of the catch orsupplemental tumbler for holding the bolt back. I may also apply myinvention to any kind of lock.

Having thus described my invention, what 100 I claim as new is- 1. Alook consisting of a bolt provided with a spring for driving it into thelocking posia spring for driving it into locking position, Lion,combined with a catch for holding the combined with a catch for holdingthe bolt bolt withdrawn, and a depressible thimble, withdrawn, and athimble, sleeve, or exposed sleeve, or exposed surface, arranged aboutthe surface, arranged about the key-hole and hav- 15 5 key-hole, andadapted to be forced inwardly to ing a conical inner end for directengagement withdraw the catch from the bolt when unand release of thecatch by a movement inlocked, and allow the bolt to be shot from theward, as described.

action of its spring into a locking position W. D. DOREMUS. without theapplication of the key, substan- \Vitnesses: r0 tially as shown anddescribed. EDWD. W. BYRN,

2. Alock consisting of abolt provided with I SOLON O. KEMON.

